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Old 05-28-2007, 05:55 AM   #1
Bob1942
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Model A head bolts

Nice to see a MODEL A FORD FORUM on here MY THANKS to AF Administrator IGOR ? My Model A is a 1929 Phaeton "Lulabelle"...The Engine "Blew" about a month ago and I am waiting for a rebuilt engine to arrive... I was wondering about " BREAK IN " Should I do anything special ? and for how long ? I have coming what they call a "Touring engine " With counterbalanced crankshaft , Touring grind camshaft , Lightened flywheel and insert bearings ...I am keeping the standard Head . THANKS! BOB
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Old 05-28-2007, 11:30 PM   #2
Mike V. Florida
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Re: Model A head bolts

Wow, you go through all the time, trouble and expense of a "touring" engine and you keep the original head?

Anyway any good rebuilder will give you instructions on how to break in and seat everything. I would (and have) run the engine for just a few miles to bring the engine up to temp and then change the oil. This, while it might seem like a waste, will help insure that all the debris that might be left after the machining will be flushed out since the Model A does not have a filter.

Next, just run the engine at various speeds never staying at one speed too long so the pistons will seat properly (about 500 to 750 miles).
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Old 05-29-2007, 12:30 PM   #3
Bob1942
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Re: Model A head bolts

Quote:
Originally Posted by Mike V. Florida
Wow, you go through all the time, trouble and expense of a "touring" engine and you keep the original head?

Anyway any good rebuilder will give you instructions on how to break in and seat everything. I would (and have) run the engine for just a few miles to bring the engine up to temp and then change the oil. This, while it might seem like a waste, will help insure that all the debris that might be left after the machining will be flushed out since the Model A does not have a filter.

Next, just run the engine at various speeds never staying at one speed too long so the pistons will seat properly (about 500 to 750 miles).
THANKS Mike : Just the info I need ...I find the stock engine to have plenty of power for me and my kind of driving so I am not changing the head and its another (almost) $300.00 ... I am after long engine life and smooth operation ...The rebuilder says he should ship the engine to me within two days ...BOB
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Old 05-30-2007, 08:57 PM   #4
Mike V. Florida
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Re: Model A head bolts

A high compression engine will lower the operating temp and increase MPG about 10 to 15% (at least it did with mine) I went from about 18 to about 21 MPG.
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